You are definitely not alone. I have terrible spasticity in the back of my thighs (hamstrings). It is so excruciatingly painful. I’m also on 60mg if Baclofen throughout the day and also take a 2mg tablet of Tizanadine as needed. I feel like none of it is working. I get relief from stretching but it’s only very temporary. I am going to be getting Botox injected into my hamstrings and calves in a couple of weeks. I am hoping it will give me some relief. The pain keeps me up at night and is just miserable. So yeah-I hear ya!